Litter-carrier.



G. A. OLSON r LITTER CARRIER.

APPLICATION FILED APR. 29, 1910.

Patented Dec. 13,1910.

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a W a G. A. OLSON. LITTER CARRIER.- APPLIOATION FILED 111.29, 1910.

Patented Dec. 13, 1910.

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GUSTAV A. OLSON, 0F ALBERT LEA, MINNESOTA.

LITTER-CARRIER.

To all whom 'it may concern:

Be it known that I, GUs'rAv A. OLSON, a citizen of the United States,residing at Albert Lea, in the county of Freeborn and State ofMinnesota, have invented certain new and useful Improvements in Litter-Carriers; and I do hereby declare the following to be a full, clear, andexact descrip tion of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention has for its object to provide an improved litter carrierand, to this end, it consists of the novel devices and combination ofdevices hereinafter described and defined in the claims.

In the accompanying drawings which illustrate the invention, likecharacters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a view in side elevation showingmy improved carrier and a section of the track upon which it is mountedto run; Fig. 2 is a view in end elevation, with some parts sectioned, onthe line 00 m of Fig. 1, showing the carrier and track; Fig. 3 is asection on the line :0 m of Fig. 1; Fig. 1 is a section on the line 00as of Fig. 1; Fig. 5 is a fragmentary view, showing the bucket andcertain cooperating parts, some parts being broken away; Fig. 6 is adetailed view on an enlarged scale, with parts sectioned, on the line 00w of Fig. 1; and Fig. 7 is a side elevation of the parts shown in Fig.6.

The numeral 1 indicates a track rail supported by hangers 2 from asuitably supported horizontal beam 3. At one or more points on the trackrail 1 is a tripping abutment 4 that is rigidly but preferably adjustably secured thereto.

The bucket 5 is provided, at its ends, with trunnions 6 that arejournaled in the lower ends of the arms of an inverted approximatelyU-shaped truck frame. This truck frame is made up of horizontallyextended laterally spaced bars 7, preferably of channel form, which, attheir ends, are rigidly bolted to cast elbow brackets 8. Laterallyspaced vertically extended bars 9, preferably, also, of channel form,are bolted or otherwise rigidly secured to the downturned ends ofSpecification of Letters Patent.

Application filed April 29, 1910.

Patented Dec. 13, 1910.

Serial No. 558,409.

the elbow brackets 8, and the pronged upper extremities of cast armextensions 10 are bolted or otherwise rigidly secured to the lower endsof the said bars 9. The trunnions 6 are directly journaled in the lowerends of the arm extensions 10.

Grooved truck wheels 11 are arranged to run in pairs on the rail 1 andthese, as shown, are journaled to small frames 12 intermediately pivotedto the upper ends of hanger brackets 13, the lower ends of which, inturn, are swiveled in the horizontal portions of the blocks 14., so thatthe said truck wheels may freely travel on a curved track. Securedbetween the horizontal portions of the elbow brackets 8 are dependingabutments or blocks 14, through which a thrust rod 15 is arranged towork endwise. The ends of the thrust rod 15 are pivotally connected tolock levers 16 which, in turn, are intermediately ivoted by bolts orpins 17, to the frame ars '9. The upper ends of these lock levers 10 areadapted to engage with one or the other of the abutments 4: on the trackrail. The lower ends of said lock levers are arranged to engageintermediate lock notches 18 of cam acting lock heads 19 secured to theupper ends of supporting brackets 20 which, in turn, are riveted one toeach head of the bucket 5. Both of the lock heads 19 are offsetconsiderably from the adjacent heads of the bucket and both are roundedor made cam-shaped on the same side, to-wit, as shown in Fig. 5, on theright hand sides. The purpose of this will presently appear.

The thrust rod 15 is yielding-1y held in an intermediate position by astrong long coiled spring 21, shown partly in full and partly by dottedlines in Fig. 1. This spring is normally compressed between theabutments 14 and it normally engages with stops in the form of pins '22applied to the said thrust rod and normally held by the said spring inrecesses formed in the said abutments.

Normally, the spring 21 holds the lower ends of the lock lever 16engaged with the notches 18 of the cooperating lock heads 19 and thusthe bucket is held locked by both lock levers, one acting on each endthereof. The upper end of either lock lever 16 is, by movement of thebucket in either direction,

engaged with the fixed tripping abutment 4, both levers will besimultaneously moved out of the lock notches 18 of the cooperating lockheads 19 and the bucket will be released and will, by gravity, be turnedupside down and caused to dump its load. Under such tripping movement,the spring 21 is, of course, compressed and it then acts as a cushioningspring which brings the bucket to a sudden stop without intense jars orpounding action. As soon as the engaged lever recovers from the force ofthe impact due to its engagement with the tripping abutment, the spring21 will simultaneously throw both lock levers 16 back to normalpositions while the bucket is in an inverted position. Then, when thebucket is turned pivotally back to its normal position, the rounded orcam faces of the head 18, acting on the lower ends of the lock levers16, will cam the said levers s'idewise and, when the bucket reaches itsnormal upturned position, the spring 21 will again throw the said locklevers back into the notches 18, thereby again locking the bucket in itsnormal position ready to be again filled.

As shown in Fig. 4, the so-called abutments 14 are preferably each madeup of two sections or, in other words, are split longitudinally andcentrally, are rigidly clamped together and to the ends of the bars 7and 9, by nutted bolts 28.

The levers 16, at their upper ends, are preferably provided with pivotedsections 16 which, when turned upward, are positioned for engagementwith the tripping abutment 4 but which, when turned downward, will passunder said abutment. These lever sections 16 have stops 1G that hold thesame against pivotal movement when engaged with the abutment 4 bymovement of the carrier in a direction from the right toward the left inrespect to Fig. 1. Hence, if the lefthand lever 16 be turned upward, itwill engage with the said abutment 4 while, if the lefthand section 16be turned downward and the righthand lever 16 turned upward, the latterwill engage the said abutment. By this adjustment of the lever 16, andwithout adjustment of the abutment 4, a distance of four or five feet ofvariation in the dumping position of the bucket is provided for. Also,when the bucket is run backward 0n the track, the lever section 16 uponstriking the abutment 4, will turn downward and permit the carrier tofreely pass.

What I claim is:

1. The combination with a track, of a truck frame having wheels arrangedto run on said track, a bucket pivotally connected to said frame andprovided with lock heads at its ends, a pair of lock levers pivotallyconnected to said frame and cooperating one with each of said lock headswhen in intermediate positions and movable to either side of said lockheads to release the same, means connecting said levers for commonmovements and yieldingly holding the same in intermediate positionsengaged with said lock heads, and a relatively fixed abutment associatedwith said track and operative to move said levers simultaneouly intoreleasing positions.

2. The combination with a track, of a frame having wheel's arranged torun on said track, a bucket pivotally connected to said frame andprovided with lock heads at its ends, lock levers pivotally connected tosaid frame and normally engaging said lock heads, a thrust rodconnecting said levers for common movements, a spring normally holdingsaid thrust rod in an intermediate position, and a tripping abutmentassociated with said. track for forcing said levers into releasingpositions, at least one of the said lock heads having a cam actingsurface acting on the cooperating lever, to effect reengagement of thesaid lever with said lock heads when said bucket is moved from a dumpingback to normal position.

8. In a carrier of the kind described, an

inverted approximately U-shaped frame pivoted to said frame and normallyengaging said lock head, and a spring yieldingly holding said lock leverin an intermediate locking position, substantially as described.

4. A litter carrier provided with a pivoted bucket and a cooperatinglock lever yieldingly held in an intermediate locking position.

5. The combination with a track and a cooperative tripping abutment, ofa truck frame having wheels arranged to run on said track, a bucketpivotally connected to said frame, and a bucket latching mechanismcomprising a lever having a pivoted end for engagement'with saidtripping abutment when turned upward said pivoted end being capable ofpivotal movement in one direction only from its operative position,substantially as described.

6. The combination with a track and cooperating tripping abutment, of atruck frame having wheels arranged to run on said track, a bucketpivotally connected to said frame and provided with lock heads at itsends, a pair of look levers pivotally confrom operative positions,substantially as nected to said frame and cooperating one described. 10with each of said lock heads, and means con- In testimony whereof Iafiix my signanecting said levers for common movements ture in presenceof two Witnesses.

and yieldingly holding the same in inter- GUSTAV A. OLSON. mediatepositions engaged with said lock Witnesses:

heads, the said levers having abutment en- T. G. SKINNER,

gaging end sections that are movable to and R. B. SKINNER.

